| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1974 | TX | D | U.S. House | District 21 | Primary | 4 | 3,166 | 3.9% | |
| 1976 | TX | D | U.S. House | District 21 | Primary | 2 | 10,323 | 13.8% | |
| 1978 | TX | D | U.S. House | District 21 | Primary | 3 | 11,512 | 12.2% | |
| 1980 | TX | D | U.S. House | District 21 | Primary | 1 | 36,151 | 60.0% | |
| 1980 | TX | D | U.S. House | District 21 | General | 2 | 58,425 | 22.8% | |
| 1982 | TX | D | U.S. Senate Class 1 | Primary | 2 | 276,314 | 21.9% | ||
| 1984 | TX | D | U.S. House | District 21 | Primary | 1 | 24,431 | 56.8% | |
| 1984 | TX | D | U.S. House | District 21 | General | 2 | 48,039 | 19.4% | |
| 1986 | TX | D | U.S. House | District 21 | Primary | 3 | 5,076 | 16.0% | |
| 1988 | TX | D | U.S. Senate Class 1 | Primary | 2 | 244,805 | 15.2% | ||
| 1996 | TX | D | U.S. House | District 23 | Primary | 1 | 21,085 | 47.1% | |
| 1996 | TX | D | U.S. House | District 23 | Primary Runoff | 2 | 9,131 | 49.3% | |
| 1998 | TX | D | U.S. House | District 23 | Primary | 2 | 19,961 | 43.4% | |
| 1998 | TX | D | U.S. House | District 23 | Primary Runoff | 2 | 8,236 | 47.3% | |
| 2000 | TX | D | U.S. House | District 23 | Primary | 2 | 18,937 | 30.4% | |
| 2004 | TX | D | U.S. House | District 23 | Primary | 1 | 29,061 | 63.8% | |
| 2004 | TX | D | U.S. House | District 23 | General | 2 | 72,480 | 29.4% | |
|
Age: Age as of July 1 of the year pertaining to this election. |